MailMergic

A proven Outlook mass email add-in that not only provides true bulk mailouts in Outlook but also enables high-level personalization in your mailings: you can send individual emails to a great number of recipients via Microsoft Outlook seamless and easily! Create the Outlook message as you usually would, apply the distribution list and just click ‘Send Personally’ button instead of native ‘Send’ one. Perform bulk mailing in Outlook but provide a personal greeting for each recipient: name; surname or email address. Even if you are sending a message to an entire list of recipients, only one contact will be displayed in the ‘To’ field.

OutMass is a browser extension for Chrome and Edge that adds mass-email and mail-merge capability to Outlook on the web. Campaigns are built inside Outlook itself, and every message is sent through the user's own Microsoft account via the official Graph API, so recipients see a normal email rather than a bulk sender. Microsoft 365 and personal Outlook accounts are both supported. Campaigns start from a CSV: each column becomes a merge tag, and every recipient gets a personalized message. Open and click tracking show who engaged, and a daily reply check catches responses. Automated follow-ups re-contact non-openers and stop the moment someone replies. Scheduled sending, per-day send limits, A/B subject testing, an AI email writer, reusable templates, campaign reports with CSV export, unsubscribe links and OneDrive-link attachments complete the toolset. The interface is available in 13 languages. Free plan: 250 emails per month. Starter: $9/month for 2,500. Pro: $19/month for 10,000.