Прикрепи файл к письму и проверь вложение перед отправкой.

Attach the file to the email and check the attachment before sending.

Breakdown of Прикрепи файл к письму и проверь вложение перед отправкой.

• и: and
• к: to
• перед: before
• проверить: to check

Questions & Answers about Прикрепи файл к письму и проверь вложение перед отправкой.

Why are the verbs прикрепи and проверь in this form? Who is being addressed?

Both прикрепи (from прикрепить) and проверь (from проверить) are imperatives in the informal singular form. It’s the kind of command/request you’d say to one person you address as ты (a friend, colleague you’re on first-name terms with, etc.).

For a polite/formal or plural вы form, you’d use:

• Прикрепите файл к письму и проверьте вложение перед отправкой.

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Why are these imperatives perfective? What would change if I used imperfective?

прикрепить and проверить are perfective verbs, and perfective imperatives typically mean do it (once) and get the result: attach it (so it ends up attached), check it (so it ends up checked).

Imperfective imperatives would be:

• прикрепляй / прикрепляйте
• проверяй / проверяйте

These are more like be doing it / do it regularly / do it as a process, and can sound like instructions for a repeated routine or an ongoing action:

• Перед отправкой всегда проверяй вложения. = Before sending, always check attachments.

In your sentence, a one-time action with a clear outcome is intended, so perfective fits.

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What case is файл in here, and why?