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• Campaigns — import contacts, write and send, contacts, unsubscribed, bounced, re-engagement.
• Analytics — campaign history and reports, locations, send times, engagement.
• Tools — inbox, WordPress, Social & Design, tasks, notes, team chat.
• Settings — email sending, team, company profile, plan and usage.

• Default Sender — the account campaigns go out from, plus the sending speed (batch size, delay, maximum per hour). Every user has one.
• Other Mailboxes — extra accounts for the inbox, which can also be picked as the sender of a campaign.

• Outlook / Microsoft 365 — server smtp.office365.com (or smtp-mail.outlook.com for personal accounts), port 587. Some Microsoft accounts no longer allow password sign-in for SMTP; if the test fails, ask your IT admin or use an email-sending service.
• Yahoo Mail — server smtp.mail.yahoo.com, port 465 or 587, with an app password from Yahoo Account Security.
• Zoho Mail — press Quick fill “Zoho” (smtp.zoho.com, port 465). Use smtp.zoho.eu if your account is in the EU.
• iCloud Mail — server smtp.mail.me.com, port 587, with an app-specific password from your Apple Account.

Press the matching Quick fill in Settings›Email Sending. These services give you a separate SMTP login — put it in SMTP Username and use the SMTP key or password they issue. They have no inbox, so leave the IMAP server blank. New Amazon SES accounts start in a sandbox until you request production access.

Choose Quick fill “Custom”. Your host’s webmail or cPanel “Connect devices” page lists the outgoing server. Sign in with the full email address and leave SMTP Username blank. Most cPanel hosts allow about 50 emails an hour, so set Max per hour below that.

• Batch size — how many emails go out together.
• Delay — the minutes between batches.
• Max per hour — a cap for all campaigns from one domain together. 0 means no limit, for services such as Amazon SES.

Add the mailbox under Other Mailboxes with its IMAP server, then open Tools›Inbox. Press Sync to fetch new mail, star what needs a follow-up and reply with attachments. Each mailbox can have its own signature.

• The address is broken — for example no @, a space, or no dot in the domain.
• It was already in the file or in your account.
• The person unsubscribed before. Devlo keeps them out on purpose.

Campaigns›Unsubscribed and Campaigns›Bounced list them. Unsubscribes are permanent. Addresses that hard-bounce — or soft-bounce again and again — stop receiving campaigns automatically.

Use Export CSV on the Contacts page. Your data is yours; you can take it with you any time.

Add a second subject line and the list is split 50/50. The campaign report shows both — sent, open rate, click rate — and marks the winner.

• SPF, DKIM or DMARC on the sending domain is broken. The campaign waits and shows what to fix — you can still choose to send anyway.
• The hourly cap for the domain was reached; sending carries on in the next hour.
• The mailbox login failed. Test it again in Settings›Email Sending.

Yes, to every campaign email, together with the one-click unsubscribe header that Gmail and Yahoo ask for. Do not remove it.

Open Settings›Email Sending → Domain Health. Each record is read live from DNS and shown green, amber or red, with the reason in plain words and a corrected record to copy.

• Change records where your domain’s DNS is managed — Cloudflare, your registrar, or cPanel’s Zone Editor.
• Paste the record Devlo suggests, then press Check again. DNS changes can take a few minutes to a few hours.
• Read the deliverability guide for what each record does.

Devlo shows which list and a link to its removal page. Fix the cause first — a hacked mailbox or a list that was not collected with permission — then request removal. A listing warns you; it never stops a campaign by itself.

Analytics›Campaign History lists every campaign; open one for its report. Analytics›Send Times shows the hours and days your audience reads, and Analytics›Locations roughly where.

Opens come from a tiny image. Some apps load images automatically and others block them. Devlo filters known bots and early scanner opens, but treat opens as a trend, and clicks as the stronger signal.

Campaigns›Re-engagement sorts contacts into tiers by activity. Send the quiet ones a short “still interested?” email with a keep-me link, and suppress those who stay silent. More in this playbook.

Settings›Team → add a member with a role: Admin (everything), Manager or Employee. Roles decide who can send campaigns and change settings. How many members you can add depends on your plan.

Add the site in Settings›Email Sending → WordPress Sites with a WordPress Application Password (Users → Profile → Application Passwords in WordPress). The optional Devlo Bridge plugin adds Elementor-aware duplication and fuller site reports.

Add your own AI provider key in Settings›Email Sending → AI Content Generation (and AI Image Generation for Social Studio). AI only drafts and suggests — nothing is sent or published until you press the button.

In Settings›Email Sending → Social Media Configuration, Connect with Facebook and choose your Page. Posts from Social & Design can then be published to the Page and its Instagram account.

Every account starts with a 15-day free trial. Plans are Free, Starter (£19/month), Professional (£39/month) and Enterprise (£99/month); yearly plans cost ten months. See your usage in Settings›Plan & Usage.

Upgrade from Settings›Upgrade Plan. You can cancel any time; your plan runs to the end of the period already paid for. If online payment is not available when you upgrade, email [email protected] and we will set it up for you. Refunds follow the Refund Policy.

Read how to delete your account and data, or email [email protected] from the address on your account.

Use Support in the app, or email [email protected]. A real person answers, usually within one working day.