# MailSoar > MailSoar is an independent email deliverability consulting agency founded in France (Lyon) and working with clients worldwide. Its 25 senior consultants help B2B and B2C senders stop landing in spam, get off blacklists, fix SPF, DKIM and DMARC, and scale email volume without losing the inbox. 500+ client companies; rated 4.9/5 on 200+ verified reviews. Last reviewed: 2026-10-06. The site is available in English (www.mailsoar.com) and French (www.mailsoar.com/fr/). MailSoar does not publish prices: audits and services are quoted on request after a free 30-minute call with a senior consultant. ## Key facts - [About MailSoar](https://www.mailsoar.com/about/): who MailSoar is, the consultant team (CEO Pierre Pignault), how the team works and why clients choose it. - [Client results](https://www.mailsoar.com/clients/): 500+ client companies across SaaS, e-commerce, fintech, events and media, with results by industry and by problem. - [Verified reviews](https://www.mailsoar.com/our-reviews/): 4.9/5 average on 200+ client reviews verified by Trustfolio. - [Partners](https://www.mailsoar.com/partners/): referral, reseller and technology partnerships (including GlockApps, Expert Sender and SparkPost). - [Contact](https://www.mailsoar.com/contact/): book a free 30-minute call with a senior deliverability expert; reply usually within one business day. ## Services - [All services](https://www.mailsoar.com/services-solutions/): overview of the four-step method Find, Fix, Grow and Run. - [Find: Deliverability Audit](https://www.mailsoar.com/services-solutions/deliverability-audit/): root-cause audit of authentication, sender reputation, infrastructure and inbox placement, delivered with a prioritized recovery plan. - [Fix: Deliverability Recovery](https://www.mailsoar.com/services-solutions/infrastructure-setup/): hands-on recovery when emails go to spam or get blocked, including authentication, reputation repair, list hygiene and infrastructure setup. - [Grow: Scale your email program](https://www.mailsoar.com/services-solutions/recommendation-implementation/): increase sending volume, reactivate dormant subscribers and expand the audience without hurting inbox placement. - [Run: Monitoring and ongoing support](https://www.mailsoar.com/services-solutions/ongoing-support/): continuous monitoring of sender reputation and compliance by a dedicated consultant. ## Deliverability problems MailSoar solves - [Email deliverability issues](https://www.mailsoar.com/email-deliverability-issues/): hub of the most common problems and how MailSoar handles each one. - [Emails going to spam](https://www.mailsoar.com/email-deliverability-issues/emails-going-to-spam/): why mailbox providers stop trusting a sender and how inbox placement is restored. - [Domain or IP blacklisted](https://www.mailsoar.com/email-deliverability-issues/domain-or-ip-blacklisted/): how listings on Spamhaus, SURBL and other blacklists happen and how delisting works. - [Open and click rates dropping](https://www.mailsoar.com/email-deliverability-issues/open-click-rate-drop/): separating content, measurement and filtering causes of declining engagement. - [ESP migration](https://www.mailsoar.com/email-deliverability-issues/esp-migration/): moving to a new email service provider without losing sender reputation. - [Scaling email volume](https://www.mailsoar.com/email-deliverability-issues/scaling-email-volume/): growing sends while keeping mailbox providers' trust. - [New infrastructure setup](https://www.mailsoar.com/email-deliverability-issues/new-infrastructure-setup/): launching new domains or IPs, warm-up and authentication from day one. ## Case studies - [All case studies](https://www.mailsoar.com/case-studies/): every client story with context, actions and measured results. - [Agicap (fintech)](https://www.mailsoar.com/case-studies/fintech/): Microsoft inbox placement from 60% to 98% in 9 months at 5M emails a month. - [CitizenShipper (marketplace)](https://www.mailsoar.com/case-studies/citizenshipper/): from a bad sender reputation to 96% inbox placement at 20M+ emails a month. - [Superhuman AI (SaaS)](https://www.mailsoar.com/case-studies/saas-b2c/): out of Gmail Promotions and spam to almost 100% primary inbox. - [True Classic (e-commerce)](https://www.mailsoar.com/case-studies/deliverability-at-scale/): Gmail spam placement and a Microsoft block on Klaviyo fixed at scale. - [Ogee (e-commerce)](https://www.mailsoar.com/case-studies/ogee/): Klaviyo deliverability fixed, email performance tripled, 98% inbox placement. - [Arcads (SaaS)](https://www.mailsoar.com/case-studies/arcads/): delisted from SURBL and Spamhaus, back to 100% inbox. - [TeamOut (events)](https://www.mailsoar.com/case-studies/teamout/): SPF misalignment fixed, inbox placement from 40-50% to 95%+ in 3 months. - [Swile (HR tech)](https://www.mailsoar.com/case-studies/swile/): spam placement ended on Salesforce Pardot, opens from 20% to 35%. - [Financial services at 25M+ emails a month](https://www.mailsoar.com/case-studies/finance/): reach tripled with 98% inbox placement. - [We Love Book Seller (newsletter)](https://www.mailsoar.com/case-studies/we-love-book-seller/): migrated off an outdated ESP, from 0% to 95% inbox placement. ## Guides and expert content - [Resources hub](https://www.mailsoar.com/resources/): guides, articles, webinars, glossary, FAQ and a free deliverability test. - [Email deliverability FAQ](https://www.mailsoar.com/email-deliverability-faq/): sourced answers on core terms, the Google, Yahoo and Microsoft sender rules, and when to hire an expert. - [Deliverability glossary](https://www.mailsoar.com/deliverability-glossary/): plain-language definitions of SPF, DKIM, DMARC, BIMI, feedback loops and other key terms. - [Gmail deliverability: the complete 2026 guide](https://www.mailsoar.com/resources/guide/gmail-deliverability-guide/): Gmail sender requirements, the 12 most common issues and fixes, a 30-point checklist and Postmaster Tools. - [DMARCbis implementation guide](https://www.mailsoar.com/resources/guide/dmarcbis-implementation-guide/): what the IETF revision of DMARC changes (np, psd, t=y) and how to migrate. - [Why are my emails going to spam?](https://www.mailsoar.com/resources/guide/why-emails-going-to-spam/): the causes of spam placement and a step-by-step diagnosis. - [Avoiding spam traps](https://www.mailsoar.com/resources/guide/avoiding-spam-traps-best-practices-for-email-deliverability/): pristine, recycled and typo traps and how to keep them off your lists. - [Email subdomain vs separate domain](https://www.mailsoar.com/resources/guide/email-subdomain-vs-separate-domain/): which sending setup protects reputation and inbox placement. - [Dedicated or shared IP](https://www.mailsoar.com/resources/guide/dedicated-or-shared-ip/): when a dedicated IP makes sense and when a shared pool is safer. - [How spam filters work](https://www.mailsoar.com/resources/guide/how-do-spam-filters-work/): the signals filters use and how to stay clear of them. - [Sender reputation explained](https://www.mailsoar.com/resources/guide/whats-a-senders-reputation-and-its-so-important/): what IP and domain reputation are and why they decide inbox placement. - [Email infrastructure](https://www.mailsoar.com/resources/guide/emailing-infrastructure/): sending domains, SPF, DKIM, DMARC, rDNS, dedicated IPs and feedback loops. - [Set up Google Postmaster Tools](https://www.mailsoar.com/resources/guide/set-up-google-postmaster/): step-by-step setup to monitor Gmail reputation. - [Delivery vs deliverability](https://www.mailsoar.com/resources/guide/difference-email-delivery-vs-deliverability/): why an accepted email is not the same as an email in the inbox. - [Improve email engagement rate](https://www.mailsoar.com/resources/guide/improve-email-engagement-rate/): engagement as a deliverability signal, beyond copywriting. - [Email warm-up](https://www.mailsoar.com/resources/article/email-warm-up/): warming new domains and IPs safely. - [IP blacklisted](https://www.mailsoar.com/resources/article/ip-blacklisted/): why an IP gets listed and what to fix to get removed. - [Google Postmaster Tools V1 deprecation](https://www.mailsoar.com/resources/article/google-postmaster-tools-v1-deprecation/): monitoring Gmail deliverability without the old reputation dashboards. - [What an email deliverability agency does](https://www.mailsoar.com/resources/article/role-email-deliverability-agency/): the role of an agency and what to expect from one. - [10 signs you need a deliverability expert](https://www.mailsoar.com/resources/article/need-to-consult-an-email-deliverability-expert/): early warning signs before performance collapses. - [Blog](https://www.mailsoar.com/blog/): all articles, news and webinar recaps. ## Pages en français - [Accueil MailSoar (FR)](https://www.mailsoar.com/fr/): agence de délivrabilité email, 25 consultants, plus de 500 marques clientes. - [À propos (FR)](https://www.mailsoar.com/fr/a-propos/): l'équipe de consultants en délivrabilité et sa méthode. - [Solutions (FR)](https://www.mailsoar.com/fr/solutions/): audit, recovery, performance des campagnes et monitoring. - [Problèmes de délivrabilité (FR)](https://www.mailsoar.com/fr/problemes-delivrabilite/): spam, blacklist, baisse du taux d'ouverture, migration et montée en volume. - [Cas clients (FR)](https://www.mailsoar.com/fr/cas-client/): études de cas et résultats chiffrés. - [Ressources délivrabilité (FR)](https://www.mailsoar.com/fr/ressources-delivrabilite/): guides, articles, glossaire et FAQ en français. ## Optional - [XML sitemap](https://www.mailsoar.com/sitemap_index.xml): full list of indexable pages in English and French. - [Careers: Email Deliverability Consultant](https://www.mailsoar.com/about/email-deliverability-consultant/): open consultant position (remote, US/EU preferred).